Say you have a 10 billion year old, slow rotating, quiescent M5 star with a mass of 0.32 M☉ , a luminosity of 0.018 L☉ and a burning (haha) desire to figure out the surface temperature. However you also have very poor maths skills and no way to solve the relevant equation (as seen below.)

I would be incredibly grateful if some smart person could do the equation below with the figures I've provided. I'm sorry, I just don't have the maths skills to do it myself!

enter image description here


  • $\begingroup$ Cross-posted on Worldbuilding, where IMHO this question actually belongs. $\endgroup$ – Glorfindel Jul 12 at 6:13
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    $\begingroup$ Yeah, I'm not blaming you, but cross-posting leads to fragmentation of answers which is bad for the overall quality of the network. At the least you should include links to all questions in your post. Here is some recommended reading about cross-posting. $\endgroup$ – Glorfindel Jul 12 at 6:20
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    $\begingroup$ Sure, no problem. We know it takes a while to get used to the network :) $\endgroup$ – Glorfindel Jul 12 at 6:44
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    $\begingroup$ @uhoh Thanks for the clarification! To do that would I just remove the mentions to the fictitious stars or simply present the figures and the calculation? I'll do that. $\endgroup$ – MissMermaid Jul 12 at 6:44
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    $\begingroup$ @uhoh does that edit make it less cross-post-y? Or should I still delete? $\endgroup$ – MissMermaid Jul 12 at 6:53

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